diff --git a/dev-python/markdown/markdown-3.3.6.ebuild b/dev-python/markdown/markdown-3.3.6.ebuild
index f002bdf41c904..4f161f58b7028 100644
--- a/dev-python/markdown/markdown-3.3.6.ebuild
+++ b/dev-python/markdown/markdown-3.3.6.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2021 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -16,7 +16,7 @@ S="${WORKDIR}/${P^}"
 
 LICENSE="BSD"
 SLOT="0"
-KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~m68k ~mips ppc ppc64 ~riscv sparc x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos"
+KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos"
 IUSE="doc"
 
 RDEPEND="